A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5999-01-045-0805
NSN 4140-01-574-7357
NSN 6130-01-517-7792
NSN 5920-00-848-0264
NSN 6130-00-662-8557
NSN 5835-00-909-7421
NSN 5945-01-606-2879
NSN 6645-01-495-0939
NSN 5990-01-414-7618
NSN 5895-00-342-9581
NSN 5835-01-602-0311
NSN 5835-01-205-6614